ruby-baileys@1.5.18
WhatsApp Web API — Ruby-Baileys by Kyuu. 100% Powered by @rexxhayanasi/elaina-baileys with integrated MessageBuilder, native flow, VoIP calling, and database auth stores.
AI Security Review
scanned 2h ago · by lpm-firewall-aiThe package silently uses the user's WhatsApp account to follow two hard-coded channels whenever a connection opens. This is an unrequested account action toward publisher-chosen targets.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review
Trigger
A caller creates a socket with makeWASocket and its connection opens.
Impact
The user's WhatsApp account follows channels the user did not choose.
Mechanism
The connection handler resolves fixed newsletter invite codes to channel IDs, then calls newsletterFollow for each one.
Attack narrative
When a WhatsApp socket created by the package connects, the package looks up two fixed newsletter invite codes and follows the resulting channels through the user's account. The user does not need to request either follow action.
AI rationale
The package silently uses the user's WhatsApp account to follow two hard-coded channels whenever a connection opens. This is an unrequested account action toward publisher-chosen targets.
Evidence
src/Socket/index.js
Network endpoints1
WhatsApp newsletter API; invite codes 0029VbDO8tI2phHLTSN2ed0U and 0029VbDXYlKDJ6H1D7Dm0f13
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- makeWASocket registers a connection-update handler that runs when the WhatsApp connection opens.
- On connection open, the handler looks up two hard-coded newsletter invite codes and follows each channel with an ID returned by WhatsApp.
Evidence against
- The preinstall hook only checks the Node.js major version and exits if it is below 20.
- The package presents itself as a WhatsApp Web API library, so creating a WhatsApp socket is expected.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkWebSocket
HighEntropyStringsMinifiedPossibleObfuscationUrlStrings
Source & flagged code
13 flaggedpackage.jsonView file
•scripts.preinstall = node ./engine-requirements.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkgsrc/Voip/worker-bootstrap.jsView file
337const code = fs.readFileSync(url, "utf8");
L338: eval(code);
L339: }
Low
Eval
Package source references a known benign dynamic code generation pattern.
src/Voip/worker-bootstrap.jsView on unpkg · L337src/Utils/auth-store.jsView file
18try {
L19: const mod = await import(name);
L20: return mod.default ?? mod;
Medium
Findings
6 High8 Medium6 Low
HighInstall Time Lifecycle Scriptspackage.json
HighSemantic Analysis LimitedWAProto/index.js
HighKnown Malware Source Similaritysrc/Utils/messages-media.js
HighKnown Malware Source Similaritysrc/Voip/audio-feeder.js
HighKnown Malware Source Similaritysrc/Voip/video-feeder.js
HighKnown Malware Source Fingerprint Signaturesrc/Utils/messages-media.js
MediumDynamic Requiresrc/Utils/auth-store.js
MediumUnsafe Vm Contextsrc/Voip/wasm-engine.js
MediumNetwork
MediumEnvironment Vars
MediumShips Wasm Modulesrc/assets/wasm/whatsapp.wasm
MediumShips Build HelperWAProto/GenerateStatics.sh
Affected versions and remediation
This report applies to ruby-baileys@1.5.18.
See all versions of ruby-baileys for other recorded verdicts.
- Avoid installing ruby-baileys@1.5.18. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Source advisory published: .
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